Impaired hematopoiesis and delayed thrombopoietic recovery following sublethal irradiation in SRC‑3 knockout mice

Jin,J.; Wang,Y.; Wang,J.; Xu,Y.; Chen,S. L.; Wang,J. P.; Su,Y. P.

doi:10.3892/mmr.2014.2043

Impaired hematopoiesis and delayed thrombopoietic recovery following sublethal irradiation in SRC‑3 knockout mice

Authors:
- J. Jin
- Y. Wang
- J. Wang
- Y. Xu
- S. L. Chen
- J. P. Wang
- Y. P. Su
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Affiliations: Institute of Combined Injury, State Key Laboratory of Trauma, Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing 400038, P.R. China, Department of Hematology, Daping Hospital, Third Military Medical University, Chongqing 400042, P.R. China
Published online on: March 12, 2014 https://doi.org/10.3892/mmr.2014.2043
Pages: 1629-1633

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Abstract

The objective of the present study was to investigate the role of the steroid receptor coactivator‑3 (SRC‑3) in hematopoiesis of mouse bone marrow (BM) following total body irradiation (TBI). SRC‑3‑/‑ mice and wild‑type (WT) mice were exposed to 4.5 Gy γ rays. Immunoblotting analysis revealed that the SRC‑3 protein (p160) levels in normal BM‑nucleated cells in WT were higher than in SRC‑3‑/‑ mice. Furthermore, peripheral blood cell counts, BM cellularity and colony‑forming unit (CFU) assays were performed following irradiation. The results showed that peripheral blood cells were significantly lower in number and recovered less rapidly in irradiated SRC‑3‑/‑ mice as compared with control animals. BM‑nucleated cell and CFU counts were significantly decreased in SRC‑3‑/‑ mice on the 7th and 14th day. Of note, the recovery of platelet (PLT) and megakaryocytic lineage were more depressed than the granulocytic and erythroid lineage in SRC‑3‑/‑ mice. In conclusion, the present study demonstrated that the hematopoietic ability in SRC‑3 knockout mice is severely impaired following a sublethal dose of irradiation.

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